67 lines
1.7 KiB
Plaintext
67 lines
1.7 KiB
Plaintext
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NIST/ITL StRD
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Dataset Name: BoxBOD (BoxBOD.dat)
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File Format: ASCII
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Starting Values (lines 41 to 42)
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Certified Values (lines 41 to 47)
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Data (lines 61 to 66)
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Procedure: Nonlinear Least Squares Regression
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Description: These data are described in detail in Box, Hunter and
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Hunter (1978). The response variable is biochemical
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oxygen demand (BOD) in mg/l, and the predictor
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variable is incubation time in days.
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Reference: Box, G. P., W. G. Hunter, and J. S. Hunter (1978).
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Statistics for Experimenters.
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New York, NY: Wiley, pp. 483-487.
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Data: 1 Response (y = biochemical oxygen demand)
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1 Predictor (x = incubation time)
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6 Observations
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Higher Level of Difficulty
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Observed Data
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Model: Exponential Class
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2 Parameters (b1 and b2)
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y = b1*(1-exp[-b2*x]) + e
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Starting values Certified Values
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Start 1 Start 2 Parameter Standard Deviation
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b1 = 1 100 2.1380940889E+02 1.2354515176E+01
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b2 = 1 0.75 5.4723748542E-01 1.0455993237E-01
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Residual Sum of Squares: 1.1680088766E+03
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Residual Standard Deviation: 1.7088072423E+01
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Degrees of Freedom: 4
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Number of Observations: 6
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Data: y x
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109 1
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149 2
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149 3
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191 5
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213 7
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224 10
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